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[Discuss-gnuradio] usrp over/underrun problems
From: |
Bob Vincent |
Subject: |
[Discuss-gnuradio] usrp over/underrun problems |
Date: |
Tue, 15 Feb 2005 10:54:16 -0500 |
We've got a couple of USRP boards running on "embedded" ebx boards.
Unfortunately, we are seeing usb overruns/underruns when we run the fsk_tx
/ rx example. I removed the fft from the signal chain, and we still see
regular overruns on the rx side. Also cut the cordic freq. to 2e6, with the
same results. I thought this might change the sampling rate. Is that so?
Also, after the test runs for a few seconds many packets are lost.
Finally, setting the data rate lower seems to make things much worse.
Perhaps that is because the correlator runs longer?
We're using fedora 3 on a 1G pentium 3, approximately. I suspect the usb
isn't fast enough, but that's the hardware we're stuck with. So turning
down the a/d clock would be good.
- [Discuss-gnuradio] usrp over/underrun problems,
Bob Vincent <=